Girsh,
The definition of an
Interval I have been assuming is given by a start time and an end time which is
the same as you assume below.
Ed
From: Girish Ghatikar [mailto:GGhatikar@lbl.gov]
Sent: Friday, April 02, 2010 5:06 PM
To: emix@lists.oasis-open.org
Subject: [emix] Definition of a "Price Interval"
This came up during last week's eMIX
TC meeting -- What is the definition of price interval? What
elements/attributes are comprised in it?
For any price, there should be a standard "Time" factor associated
with it (unless the exception is there is "one" price for all
periods).
I think we should make a key distinction of price schedule versus the interval
(if we ever can) and how the generic price intervals are different from their
definition in DR signals (the notion of DR events).
Let's say for example, a price-responsive DR event in OpenADR may look
something like this (I am not saying this is how eMIX should address it as the
goal of sending the information and subsequent response may differ) --
<p:drEventData>
<p:notificationTime>2010-02-08T15:17:21.000-08:00</p:notificationTime>
<p:startTime>2010-02-09T00:00:00.000-08:00</p:startTime>
<p:endTime>2010-02-09T23:59:59.000-08:00</p:endTime>
<p:eventInfoInstances>
<p:eventInfoTypeID>PRICE_ABSOLUTE</p:eventInfoTypeID>
<p:eventInfoName>price</p:eventInfoName>
<p:eventInfoValues>
<p:value>0.03638841</p:value>
<p:timeOffset>0</p:timeOffset>
</p:eventInfoValues>
</p:eventInfoInstances>
</p:drEventData>
What you see above is a definition of time slot (start and end time) that has
various attributes associated with it. Other attributes could be for example,
load shed, % shed, etc. However, all of these attributes are associated with
one time-slot notion, which is defined by the period of DR event.
Thank you,
RIsh
--
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Rish
Ghatikar
Lawrence Berkeley National Laboratory
1 Cyclotron Road, MS: 90-3111, Berkeley, CA 94720
GGhatikar@lbl.gov | +1 510.486.6768 |
+1 510.486.4089 [fax]
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